Saw gummer and sharpener



(No Model. 2 Sheets-Sheet 1.

A. O. EIDELBACH.

SAW GUMMER AND SHARPBNER.

No. 357,913. Patented Feb. 15, 1887.-

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(No Model.) 2 Sheets-Sheet 2.

A. G. EIDELBAOH.

SAW GUMMER AND SHARPENER.

No. 357,913. Patented Febl 15, 1887.

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I 4Z1? I .A "27 -Z'J'J Izyd' l WITNESSES j UNITED STATES PATENT OFFICE.

ANDREWV C. EIDELBAGH, OF FLATONIA, TEXAS.

SAW GUMMER AND SHARPENER.

SPECIFICATION forming part of Letters Patent No. 357,913, dated February 15, 1887. Application filed Septcrnher lG, 1385. Serial No. 177,232. (No model) T0 at whom, it may concern.-

Beit known that I, ANDREW O. EIDELBAOH, a citizen of the United States, residing at Flatonia, in the county of Fayette and State of Texas, have invented certain newand useful Improvements in Saw Gummers and Sharpeners; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a representation of a side elevation, partly in section. Fig. 2 is a top plan view. Fig. 3 is a plan view of the head-block. Fig. 4 is an inverted plan view of the cutter-bar. Figs. 5, 6, 7, 8, 9, 10, l1, and 12 are detail views.

Theinvention relates to saw-gummcrs and saw-Sharpeners, more especially designed to gum and sharpen gangs of gilrsaws or a single circular saw; and it has for its objects to construct a machine which may be quickly and securely connected tothe gang of saws, and may be readily adjusted thereon to cut the tooth, or to change the already-formed tooth to any required depth; also, to vary the pitch of the teeth, and to make the cutter-bars and other required parts of the machine as simple as possible in a machine of the class referred to; and to these ends the invention consistsin the construction and novel combination of parts, as will be hereinafter fully described, and particularly pointed out in the claims.

Referring by letter to the accompanying drawings, A designates a gang ofgin-saws, and B the arbor on which they are mounted. These saws are arranged in the usual manner, with collars formingspaces between them.

The machineitself is constructed as follows, and the saws areto be gummed and sharpened one at a time:

A designates the head-block ofthe machine,

which is kerfed vertically at A in its forward end to receive asingle saw of the gang of saws either to gum or sharpen the same, as may be desired.

B designates the cutterholder of the machine,which rests on the head-block, and has a pivotal lateral adjustment thereon to adapt the cutter or bit 0 to saws of different thicknesses. The cutter-holder B is pivoted eccentrically at its rear end to the upper face of the head-block, a stud, B rising from the upper face of the head-block A and forming the pivot for the slotted eccentric capplate C and integral cam-plate O on the under face of the cap-plate O. Theslot O ofthe cap-plate Gis an arc-shaped slot,th rough which a stop-screw, O havingahead, and a washer beneath the head, passes into a screw-hole, C, in the cutterholder-B, and limits the reciprocating move ment of the cutter-holder B. Two nuts, D D, with awasher beneath them, hold the cutterholder and eccentricin place on the head A. In

with agroove, D5, which is elliptical in out-line, and the walls of said groove engage a frictionroll, D onthe upper arm of ardoublc crank, D, which is seated in the'groove .D, andhas its lower arm, D extending down through the slot D where said lower arm, D is provided with a horizontallever-arm, E, which extends out on the same side as the handle E. The integral bearing E", from-which the handle-rod E extends, projects laterally and downwardly from the head-block A, and also extends un derthe head-block A, and forms abearing for ashort shaft, F, to the outer end of which shaft is secured a crank-arm, F, having two or more holes made laterally through it near its lower end, and this arm F is connected with thehorizontal lever-arm E by a curved connectingrod, F so that said arms F and E work together when the machine is operated.

To the inner end of the short shaft F is secured a downwardlycxtending curved arm, F provided with a spring, F*, secured to its under face, and adownwardly curved arm, F which is hinged to thelower end of said ar'in F. The spring F bears normally against the rear edge of the curved "arm F and holds the dog F at thelower end of said arm F in engagement with the saw, so that the saw can be fed forward when the teeth are being operated on.

The cutter-holder B is provided with an in clined throat, B, in which the upper bits or cntters,B" and B",are secured by screws b 6 [1 The head-block A is provided with a Vertical recess, A in which the lower cutters or bits, 13 B and the shoulder-piece B of the hinged curved arm H are secured, a screw, B being its under face the cutter-holder B is provided passed through a hole, 13, into a hole in the shoulder-pieceB An upwardlyextending curved arm, H, is pivoted to the upper forward end of the shoulder-piece B and the latter is provided with an oval or curved slot, B, made through it in rear of the pivotal point, and through this slot B a stop-screw, B is passed into the arm H and limits the movement of said arm. At its upper end the arm Hisprovided with a frame, Z. Vithin this frame is an adjustable head, 71, which is provided with lateral arms h h. Thehead h is adjusted by a screw,7i*. Upon the extended arms h h are pivoted guide-pieces 7L3 h",which are recessed vertically, and receive therein the saw that is being gummed or sharpened, and these, together with the shoe on the lower curvedhinged arm,

prevent the saw from turning during the operatiou. These guide-pieces are rendered vertically adjustable by means of the threaded rod if, which passes through a threaded aperture in the head If and bearsiu the upper and lower transverse walls of the frame Z, which is secured to the outer end of the arm H, and serves as a guide for the head-block 71?. A pivoted curved arm, I, is connected to one side of .the upwardly-extending curved arm H, and depends therefrom, and is provided with a weight, 1., at its lower end, which serves to hold the guide-pieces h h in place upon the saws. The cutter-shoulder and cutting-holder are moved by the eccentric-cam, actuated by the pivoted hand-lever, their movement bringing the cutting-edges of the cutters againstthe edge of the saw in the recess.

The operatinglever X is provided with a head, f,which is fulcrumed on a cam-stud, X seated in an arm, Xi, extending laterally from the head-bloclqand is connected by a studlink, X*, to the cutter-bar B, so that by operating the lever X the cutter-bar will be both oscillated and reciprocated' The obj ect of making the cutter-holder B adjustable is to permit the adjustment of the bit to the diein case,

the bit does not fit correctly. The eccentricloolt,which holds the lever in place, acts as a crank when the nuts are loosened, and permits the cutter-holder B to be adjusted to compensate for wear and also to suit saws of different thicknesses.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. The con1bination,with the head-block A,

having "the" vertical kerf A and elliptical hinged curved arm with pivoted verticallyadjustable guides at its forward end, and the pivoted curved arm with the weight at its lower end, substantially as specified.

3. The combination,with the curved arm H,

provided with the guide-frame at its outer end, of the pivoted guide-pieces 7L3 71. the adjustable head 71/", having lateral arms, and the adjusting-screw If, substantially as specified.

In testimony whereof I at'fix my signature in presence of two witnesses;

.ANDR-EXV c. EIDELBAOH.

VVi tn esses:

J. D. ODANIEL, WM. STEIN. 

